The DOI matches its Crossref record; 2 of the 2 references it cites were found in a registry or an index.
Spatial filtering and neocortical dynamics: estimates of EEG coherence
Open accessAbstract
The spatial statistics of scalp electroencephalogram (EEG) are usually presented as coherence in individual frequency bands. These coherences result both from correlations among neocortical sources and volume conduction through the tissues of the head. The scalp EEG is spatially low-pass filtered by the poorly conducting skull, introducing artificial correlation between the electrodes. A four concentric spheres (brain, CSF, skull, and scalp) model of the head and stochastic field theory are used here to derive an analytic estimate of the coherence at scalp electrodes due to volume conduction of uncorrelated source activity, predicting that electrodes within 10-12 cm can appear correlated. The surface Laplacian estimate of cortical surface potentials spatially bandpass filters the scalp potentials reducing this artificial coherence due to volume conduction. Examination of EEG data confirms that the coherence estimates from raw scalp potentials and Laplacians are sensitive to different spatial bandwidths and should be used in parallel in studies of neocortical dynamic function.
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Citations
Cites
Spherical splines for scalp potential and current density mapping
Perrin, F., Pernier, J., Bertrand, O., & Echallier, J. F. (1989) · Electroencephalography and Clinical Neurophysiology · doi:10.1016/0013-4694(89)90180-6 · Cited by 2,706
Finite-element model of the human head: scalp potentials due to dipole sources
Yan, Y., Nunez, P. L., & Hart, R. T. (1991) · Medical & Biological Engineering & Computing · doi:10.1007/bf02442317 · Cited by 208
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Cited by
Keil, A., Debener, S., Gratton, G., Junghöfer, M., Kappenman, E. S., Luck, S. J., Luu, P., Miller, G. A., & Yee, C. M. (2014) · Psychophysiology · doi:10.1111/psyp.12147 · Cited by 699
Destexhe, A., Contreras, D., & Steriade, M. (1999) · The Journal of Neuroscience · doi:10.1523/jneurosci.19-11-04595.1999 · Cited by 573
Increased Synchronization of Neuromagnetic Responses during Conscious Perception
Srinivasan, R., Russell, D. P., Edelman, G. M., & Tononi, G. (1999) · The Journal of Neuroscience · doi:10.1523/jneurosci.19-13-05435.1999 · Cited by 428
Self-citationWorking memory retention systems: A state of activated long-term memory
Ruchkin, D. S., Grafman, J., Cameron, K., & Berndt, R. S. (2003) · Behavioral and Brain Sciences · doi:10.1017/s0140525x03000165 · Cited by 420
Nunez, P. L., & Silberstein, R. B. (2000) · Brain Topography · doi:10.1023/a:1026683200895 · Cited by 307
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Metadata
- Authors
- Srinivasan, R., Nunez, P. L., & Silberstein, R. B.
- Venue
- IEEE Transactions on Biomedical Engineering
- Published
- 1998-07
- Volume
- 45
- Issue
- 7
- Pages
- 814-826
- ISSN
- 0018-9294 (ISSN-L)
- OpenAlex
- W2095590015
- Cited by
- 325
- References
- 2
- FWCI
- 5.27
- Type
- journal article
- Language
- en
- Open access
- green
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- Srinivasan, R., Nunez, P. L., & Silberstein, R. B. (1998). Spatial filtering and neocortical dynamics: estimates of EEG coherence. IEEE Transactions on Biomedical Engineering. https://doi.org/10.1109/10.686789
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